Earthquake · reviewed by a seismologist
M 2.5ml
Earthquake near Hesperia, CA
No earthquake was likely felt in Hesperia in the 24 hours to 3:37 am PST (11:37 UTC). The last one was M 4.3, 109 km (68 mi) NNW, at 9:40 am PDT on 13 July 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Hesperia
This page: a magnitude 2.5 earthquake was recorded 19 km (12 mi) west-southwest of Hesperia, CA, at 7:38 am PST on 9 November 2017 (15:38 UTC), 13 km deep. 8 people have reported feeling it to USGS.
USGS: 10km N of Lytle Creek, CA
93 km (58 mi) ENE of Los Angeles, CA · 17 km (10 mi) WSW of Hesperia, CA
- When
- 7:38 am PST on 9 November 2017 ()
- Where
- 19 km (12 mi) west-southwest of Hesperia, CA · earthquakes near Hesperia
- Magnitude
- M 2.5 (ml)
- Depth
- 13 km below the surface
- Felt
- 8 reports · strongest reported intensity III
- Nearest
- Los Angeles County, 73 km WSW
- Nearest mapped fault
- Cleghorn fault, 6 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3290 days ago
Earthquake alerts for Hesperia, CA
Get a notification in this browser when USGS records an earthquake near Hesperia, CA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 19 km (12 mi) from the epicentre. In Hesperia, 19 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Phelan 11 km, intensity II · Wrightwood 13 km, intensity II · Hesperia 19 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 80,000× the energy of this one
- Magna, Utah 2020 M 5.7 57,000× the energy of this one
- Around the size people start to feel M 3.0 5.1× the energy of this one
- This earthquake M 2.5 about 190 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:
- 6.2 3 km SE of San Bernardino, California · 36 km SE of this epicentre
- 5.8 The 1991 Sierra Madre, California Earthquake · 47 km W of this epicentre
- 5.6 7km ENE of Running Springs, CA · 43 km ESE of this epicentre
- 5.5 The 1990 Upland, California Earthquake · 30 km SW of this epicentre
- 5.3 Near San Bernardino, California · 39 km ESE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 34.3505, -117.4872. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 73 km (45 mi) | WSW | earthquakes near Los Angeles County |
| Orange County, CA | 80 km (49 mi) | SSW | earthquakes near Orange County |
| San Bernardino County, CA | 132 km (82 mi) | ENE | earthquakes near San Bernardino County |
| Kern County, CA | 158 km (98 mi) | NW | earthquakes near Kern County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
50 earthquakes have been recorded within 50 km since this one.
- 1.5 2km WSW of Devore, CA
- 2.6 3km ESE of Loma Linda, CA
- 1.5 3km ESE of Loma Linda, CA
- 1.7 6km SSW of Redlands, CA
- 3.3 3km S of Mentone, CA
- 1.7 4km W of Pomona, CA
- 2.1 5km SSE of Mentone, CA
- 2.2 10km E of Running Springs, CA
- 2.2 6km NNE of Fontana, CA
- 1.7 6km NNE of Fontana, CA
- 2.3 4km N of Norco, CA
- 1.7 5km WNW of Fontana, CA
- 2.5 3km NW of Lytle Creek, CA
- 1.8 11km NE of Running Springs, CA
- 2.3 9km WSW of Lytle Creek, CA
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.